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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / ivi_dsp.c
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2ba45a60
DM		 1/*
2 * DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
3 *
4 * Copyright (c) 2009-2011 Maxim Poliakovski
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23/**
24 * @file
25 * DSP functions (inverse transforms, motion compensation, wavelet recompostions)
26 * for Indeo Video Interactive codecs.
27 */
28
29#include "avcodec.h"
30#include "ivi_common.h"
31#include "ivi_dsp.h"
32
33void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
34 const int dst_pitch)
35{
36 int x, y, indx;
37 int32_t p0, p1, p2, p3, tmp0, tmp1, tmp2;
38 int32_t b0_1, b0_2, b1_1, b1_2, b1_3, b2_1, b2_2, b2_3, b2_4, b2_5, b2_6;
39 int32_t b3_1, b3_2, b3_3, b3_4, b3_5, b3_6, b3_7, b3_8, b3_9;
40 int32_t pitch, back_pitch;
41 const short *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
42 const int num_bands = 4;
43
44 /* all bands should have the same pitch */
45 pitch = plane->bands[0].pitch;
46
47 /* pixels at the position "y-1" will be set to pixels at the "y" for the 1st iteration */
48 back_pitch = 0;
49
50 /* get pointers to the wavelet bands */
51 b0_ptr = plane->bands[0].buf;
52 b1_ptr = plane->bands[1].buf;
53 b2_ptr = plane->bands[2].buf;
54 b3_ptr = plane->bands[3].buf;
55
56 for (y = 0; y < plane->height; y += 2) {
57
58 if (y+2 >= plane->height)
59 pitch= 0;
60 /* load storage variables with values */
61 if (num_bands > 0) {
62 b0_1 = b0_ptr[0];
63 b0_2 = b0_ptr[pitch];
64 }
65
66 if (num_bands > 1) {
67 b1_1 = b1_ptr[back_pitch];
68 b1_2 = b1_ptr[0];
69 b1_3 = b1_1 - b1_2*6 + b1_ptr[pitch];
70 }
71
72 if (num_bands > 2) {
73 b2_2 = b2_ptr[0]; // b2[x, y ]
74 b2_3 = b2_2; // b2[x+1,y ] = b2[x,y]
75 b2_5 = b2_ptr[pitch]; // b2[x ,y+1]
76 b2_6 = b2_5; // b2[x+1,y+1] = b2[x,y+1]
77 }
78
79 if (num_bands > 3) {
80 b3_2 = b3_ptr[back_pitch]; // b3[x ,y-1]
81 b3_3 = b3_2; // b3[x+1,y-1] = b3[x ,y-1]
82 b3_5 = b3_ptr[0]; // b3[x ,y ]
83 b3_6 = b3_5; // b3[x+1,y ] = b3[x ,y ]
84 b3_8 = b3_2 - b3_5*6 + b3_ptr[pitch];
85 b3_9 = b3_8;
86 }
87
88 for (x = 0, indx = 0; x < plane->width; x+=2, indx++) {
89 if (x+2 >= plane->width) {
90 b0_ptr --;
91 b1_ptr --;
92 b2_ptr --;
93 b3_ptr --;
94 }
95
96 /* some values calculated in the previous iterations can */
97 /* be reused in the next ones, so do appropriate copying */
98 b2_1 = b2_2; // b2[x-1,y ] = b2[x, y ]
99 b2_2 = b2_3; // b2[x ,y ] = b2[x+1,y ]
100 b2_4 = b2_5; // b2[x-1,y+1] = b2[x ,y+1]
101 b2_5 = b2_6; // b2[x ,y+1] = b2[x+1,y+1]
102 b3_1 = b3_2; // b3[x-1,y-1] = b3[x ,y-1]
103 b3_2 = b3_3; // b3[x ,y-1] = b3[x+1,y-1]
104 b3_4 = b3_5; // b3[x-1,y ] = b3[x ,y ]
105 b3_5 = b3_6; // b3[x ,y ] = b3[x+1,y ]
106 b3_7 = b3_8; // vert_HPF(x-1)
107 b3_8 = b3_9; // vert_HPF(x )
108
109 p0 = p1 = p2 = p3 = 0;
110
111 /* process the LL-band by applying LPF both vertically and horizontally */
112 if (num_bands > 0) {
113 tmp0 = b0_1;
114 tmp2 = b0_2;
115 b0_1 = b0_ptr[indx+1];
116 b0_2 = b0_ptr[pitch+indx+1];
117 tmp1 = tmp0 + b0_1;
118
119 p0 = tmp0 << 4;
120 p1 = tmp1 << 3;
121 p2 = (tmp0 + tmp2) << 3;
122 p3 = (tmp1 + tmp2 + b0_2) << 2;
123 }
124
125 /* process the HL-band by applying HPF vertically and LPF horizontally */
126 if (num_bands > 1) {
127 tmp0 = b1_2;
128 tmp1 = b1_1;
129 b1_2 = b1_ptr[indx+1];
130 b1_1 = b1_ptr[back_pitch+indx+1];
131
132 tmp2 = tmp1 - tmp0*6 + b1_3;
133 b1_3 = b1_1 - b1_2*6 + b1_ptr[pitch+indx+1];
134
135 p0 += (tmp0 + tmp1) << 3;
136 p1 += (tmp0 + tmp1 + b1_1 + b1_2) << 2;
137 p2 += tmp2 << 2;
138 p3 += (tmp2 + b1_3) << 1;
139 }
140
141 /* process the LH-band by applying LPF vertically and HPF horizontally */
142 if (num_bands > 2) {
143 b2_3 = b2_ptr[indx+1];
144 b2_6 = b2_ptr[pitch+indx+1];
145
146 tmp0 = b2_1 + b2_2;
147 tmp1 = b2_1 - b2_2*6 + b2_3;
148
149 p0 += tmp0 << 3;
150 p1 += tmp1 << 2;
151 p2 += (tmp0 + b2_4 + b2_5) << 2;
152 p3 += (tmp1 + b2_4 - b2_5*6 + b2_6) << 1;
153 }
154
155 /* process the HH-band by applying HPF both vertically and horizontally */
156 if (num_bands > 3) {
157 b3_6 = b3_ptr[indx+1]; // b3[x+1,y ]
158 b3_3 = b3_ptr[back_pitch+indx+1]; // b3[x+1,y-1]
159
160 tmp0 = b3_1 + b3_4;
161 tmp1 = b3_2 + b3_5;
162 tmp2 = b3_3 + b3_6;
163
164 b3_9 = b3_3 - b3_6*6 + b3_ptr[pitch+indx+1];
165
166 p0 += (tmp0 + tmp1) << 2;
167 p1 += (tmp0 - tmp1*6 + tmp2) << 1;
168 p2 += (b3_7 + b3_8) << 1;
169 p3 += b3_7 - b3_8*6 + b3_9;
170 }
171
172 /* output four pixels */
173 dst[x] = av_clip_uint8((p0 >> 6) + 128);
174 dst[x+1] = av_clip_uint8((p1 >> 6) + 128);
175 dst[dst_pitch+x] = av_clip_uint8((p2 >> 6) + 128);
176 dst[dst_pitch+x+1] = av_clip_uint8((p3 >> 6) + 128);
177 }// for x
178
179 dst += dst_pitch << 1;
180
181 back_pitch = -pitch;
182
183 b0_ptr += pitch + 1;
184 b1_ptr += pitch + 1;
185 b2_ptr += pitch + 1;
186 b3_ptr += pitch + 1;
187 }
188}
189
190void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
191 const int dst_pitch)
192{
193 int x, y, indx, b0, b1, b2, b3, p0, p1, p2, p3;
194 const short *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
195 int32_t pitch;
196
197 /* all bands should have the same pitch */
198 pitch = plane->bands[0].pitch;
199
200 /* get pointers to the wavelet bands */
201 b0_ptr = plane->bands[0].buf;
202 b1_ptr = plane->bands[1].buf;
203 b2_ptr = plane->bands[2].buf;
204 b3_ptr = plane->bands[3].buf;
205
206 for (y = 0; y < plane->height; y += 2) {
207 for (x = 0, indx = 0; x < plane->width; x += 2, indx++) {
208 /* load coefficients */
209 b0 = b0_ptr[indx]; //should be: b0 = (num_bands > 0) ? b0_ptr[indx] : 0;
210 b1 = b1_ptr[indx]; //should be: b1 = (num_bands > 1) ? b1_ptr[indx] : 0;
211 b2 = b2_ptr[indx]; //should be: b2 = (num_bands > 2) ? b2_ptr[indx] : 0;
212 b3 = b3_ptr[indx]; //should be: b3 = (num_bands > 3) ? b3_ptr[indx] : 0;
213
214 /* haar wavelet recomposition */
215 p0 = (b0 + b1 + b2 + b3 + 2) >> 2;
216 p1 = (b0 + b1 - b2 - b3 + 2) >> 2;
217 p2 = (b0 - b1 + b2 - b3 + 2) >> 2;
218 p3 = (b0 - b1 - b2 + b3 + 2) >> 2;
219
220 /* bias, convert and output four pixels */
221 dst[x] = av_clip_uint8(p0 + 128);
222 dst[x + 1] = av_clip_uint8(p1 + 128);
223 dst[dst_pitch + x] = av_clip_uint8(p2 + 128);
224 dst[dst_pitch + x + 1] = av_clip_uint8(p3 + 128);
225 }// for x
226
227 dst += dst_pitch << 1;
228
229 b0_ptr += pitch;
230 b1_ptr += pitch;
231 b2_ptr += pitch;
232 b3_ptr += pitch;
233 }// for y
234}
235
236/** butterfly operation for the inverse Haar transform */
237#define IVI_HAAR_BFLY(s1, s2, o1, o2, t) \
238 t = ((s1) - (s2)) >> 1;\
239 o1 = ((s1) + (s2)) >> 1;\
240 o2 = (t);\
241
242/** inverse 8-point Haar transform */
243#define INV_HAAR8(s1, s5, s3, s7, s2, s4, s6, s8,\
244 d1, d2, d3, d4, d5, d6, d7, d8,\
245 t0, t1, t2, t3, t4, t5, t6, t7, t8) {\
246 t1 = (s1) << 1; t5 = (s5) << 1;\
247 IVI_HAAR_BFLY(t1, t5, t1, t5, t0); IVI_HAAR_BFLY(t1, s3, t1, t3, t0);\
248 IVI_HAAR_BFLY(t5, s7, t5, t7, t0); IVI_HAAR_BFLY(t1, s2, t1, t2, t0);\
249 IVI_HAAR_BFLY(t3, s4, t3, t4, t0); IVI_HAAR_BFLY(t5, s6, t5, t6, t0);\
250 IVI_HAAR_BFLY(t7, s8, t7, t8, t0);\
251 d1 = COMPENSATE(t1);\
252 d2 = COMPENSATE(t2);\
253 d3 = COMPENSATE(t3);\
254 d4 = COMPENSATE(t4);\
255 d5 = COMPENSATE(t5);\
256 d6 = COMPENSATE(t6);\
257 d7 = COMPENSATE(t7);\
258 d8 = COMPENSATE(t8); }
259
260/** inverse 4-point Haar transform */
261#define INV_HAAR4(s1, s3, s5, s7, d1, d2, d3, d4, t0, t1, t2, t3, t4) {\
262 IVI_HAAR_BFLY(s1, s3, t0, t1, t4);\
263 IVI_HAAR_BFLY(t0, s5, t2, t3, t4);\
264 d1 = COMPENSATE(t2);\
265 d2 = COMPENSATE(t3);\
266 IVI_HAAR_BFLY(t1, s7, t2, t3, t4);\
267 d3 = COMPENSATE(t2);\
268 d4 = COMPENSATE(t3); }
269
270void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
271 const uint8_t *flags)
272{
273 int i, shift, sp1, sp2, sp3, sp4;
274 const int32_t *src;
275 int32_t *dst;
276 int tmp[64];
277 int t0, t1, t2, t3, t4, t5, t6, t7, t8;
278
279 /* apply the InvHaar8 to all columns */
280#define COMPENSATE(x) (x)
281 src = in;
282 dst = tmp;
283 for (i = 0; i < 8; i++) {
284 if (flags[i]) {
285 /* pre-scaling */
286 shift = !(i & 4);
287 sp1 = src[ 0] << shift;
288 sp2 = src[ 8] << shift;
289 sp3 = src[16] << shift;
290 sp4 = src[24] << shift;
291 INV_HAAR8( sp1, sp2, sp3, sp4,
292 src[32], src[40], src[48], src[56],
293 dst[ 0], dst[ 8], dst[16], dst[24],
294 dst[32], dst[40], dst[48], dst[56],
295 t0, t1, t2, t3, t4, t5, t6, t7, t8);
296 } else
297 dst[ 0] = dst[ 8] = dst[16] = dst[24] =
298 dst[32] = dst[40] = dst[48] = dst[56] = 0;
299
300 src++;
301 dst++;
302 }
303#undef COMPENSATE
304
305 /* apply the InvHaar8 to all rows */
306#define COMPENSATE(x) (x)
307 src = tmp;
308 for (i = 0; i < 8; i++) {
309 if ( !src[0] && !src[1] && !src[2] && !src[3]
310 && !src[4] && !src[5] && !src[6] && !src[7]) {
311 memset(out, 0, 8 * sizeof(out[0]));
312 } else {
313 INV_HAAR8(src[0], src[1], src[2], src[3],
314 src[4], src[5], src[6], src[7],
315 out[0], out[1], out[2], out[3],
316 out[4], out[5], out[6], out[7],
317 t0, t1, t2, t3, t4, t5, t6, t7, t8);
318 }
319 src += 8;
320 out += pitch;
321 }
322#undef COMPENSATE
323}
324
325void ff_ivi_row_haar8(const int32_t *in, int16_t *out, uint32_t pitch,
326 const uint8_t *flags)
327{
328 int i;
329 int t0, t1, t2, t3, t4, t5, t6, t7, t8;
330
331 /* apply the InvHaar8 to all rows */
332#define COMPENSATE(x) (x)
333 for (i = 0; i < 8; i++) {
334 if ( !in[0] && !in[1] && !in[2] && !in[3]
335 && !in[4] && !in[5] && !in[6] && !in[7]) {
336 memset(out, 0, 8 * sizeof(out[0]));
337 } else {
338 INV_HAAR8(in[0], in[1], in[2], in[3],
339 in[4], in[5], in[6], in[7],
340 out[0], out[1], out[2], out[3],
341 out[4], out[5], out[6], out[7],
342 t0, t1, t2, t3, t4, t5, t6, t7, t8);
343 }
344 in += 8;
345 out += pitch;
346 }
347#undef COMPENSATE
348}
349
350void ff_ivi_col_haar8(const int32_t *in, int16_t *out, uint32_t pitch,
351 const uint8_t *flags)
352{
353 int i;
354 int t0, t1, t2, t3, t4, t5, t6, t7, t8;
355
356 /* apply the InvHaar8 to all columns */
357#define COMPENSATE(x) (x)
358 for (i = 0; i < 8; i++) {
359 if (flags[i]) {
360 INV_HAAR8(in[ 0], in[ 8], in[16], in[24],
361 in[32], in[40], in[48], in[56],
362 out[0 * pitch], out[1 * pitch],
363 out[2 * pitch], out[3 * pitch],
364 out[4 * pitch], out[5 * pitch],
365 out[6 * pitch], out[7 * pitch],
366 t0, t1, t2, t3, t4, t5, t6, t7, t8);
367 } else
368 out[0 * pitch] = out[1 * pitch] =
369 out[2 * pitch] = out[3 * pitch] =
370 out[4 * pitch] = out[5 * pitch] =
371 out[6 * pitch] = out[7 * pitch] = 0;
372
373 in++;
374 out++;
375 }
376#undef COMPENSATE
377}
378
379void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, uint32_t pitch,
380 const uint8_t *flags)
381{
382 int i, shift, sp1, sp2;
383 const int32_t *src;
384 int32_t *dst;
385 int tmp[16];
386 int t0, t1, t2, t3, t4;
387
388 /* apply the InvHaar4 to all columns */
389#define COMPENSATE(x) (x)
390 src = in;
391 dst = tmp;
392 for (i = 0; i < 4; i++) {
393 if (flags[i]) {
394 /* pre-scaling */
395 shift = !(i & 2);
396 sp1 = src[0] << shift;
397 sp2 = src[4] << shift;
398 INV_HAAR4( sp1, sp2, src[8], src[12],
399 dst[0], dst[4], dst[8], dst[12],
400 t0, t1, t2, t3, t4);
401 } else
402 dst[0] = dst[4] = dst[8] = dst[12] = 0;
403
404 src++;
405 dst++;
406 }
407#undef COMPENSATE
408
409 /* apply the InvHaar8 to all rows */
410#define COMPENSATE(x) (x)
411 src = tmp;
412 for (i = 0; i < 4; i++) {
413 if (!src[0] && !src[1] && !src[2] && !src[3]) {
414 memset(out, 0, 4 * sizeof(out[0]));
415 } else {
416 INV_HAAR4(src[0], src[1], src[2], src[3],
417 out[0], out[1], out[2], out[3],
418 t0, t1, t2, t3, t4);
419 }
420 src += 4;
421 out += pitch;
422 }
423#undef COMPENSATE
424}
425
426void ff_ivi_row_haar4(const int32_t *in, int16_t *out, uint32_t pitch,
427 const uint8_t *flags)
428{
429 int i;
430 int t0, t1, t2, t3, t4;
431
432 /* apply the InvHaar4 to all rows */
433#define COMPENSATE(x) (x)
434 for (i = 0; i < 4; i++) {
435 if (!in[0] && !in[1] && !in[2] && !in[3]) {
436 memset(out, 0, 4 * sizeof(out[0]));
437 } else {
438 INV_HAAR4(in[0], in[1], in[2], in[3],
439 out[0], out[1], out[2], out[3],
440 t0, t1, t2, t3, t4);
441 }
442 in += 4;
443 out += pitch;
444 }
445#undef COMPENSATE
446}
447
448void ff_ivi_col_haar4(const int32_t *in, int16_t *out, uint32_t pitch,
449 const uint8_t *flags)
450{
451 int i;
452 int t0, t1, t2, t3, t4;
453
454 /* apply the InvHaar8 to all columns */
455#define COMPENSATE(x) (x)
456 for (i = 0; i < 4; i++) {
457 if (flags[i]) {
458 INV_HAAR4(in[0], in[4], in[8], in[12],
459 out[0 * pitch], out[1 * pitch],
460 out[2 * pitch], out[3 * pitch],
461 t0, t1, t2, t3, t4);
462 } else
463 out[0 * pitch] = out[1 * pitch] =
464 out[2 * pitch] = out[3 * pitch] = 0;
465
466 in++;
467 out++;
468 }
469#undef COMPENSATE
470}
471
472void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, uint32_t pitch,
473 int blk_size)
474{
475 int x, y;
476 int16_t dc_coeff;
477
478 dc_coeff = (*in + 0) >> 3;
479
480 for (y = 0; y < blk_size; out += pitch, y++) {
481 for (x = 0; x < blk_size; x++)
482 out[x] = dc_coeff;
483 }
484}
485
486/** butterfly operation for the inverse slant transform */
487#define IVI_SLANT_BFLY(s1, s2, o1, o2, t) \
488 t = (s1) - (s2);\
489 o1 = (s1) + (s2);\
490 o2 = (t);\
491
492/** This is a reflection a,b = 1/2, 5/4 for the inverse slant transform */
493#define IVI_IREFLECT(s1, s2, o1, o2, t) \
494 t = (((s1) + (s2)*2 + 2) >> 2) + (s1);\
495 o2 = (((s1)*2 - (s2) + 2) >> 2) - (s2);\
496 o1 = (t);\
497
498/** This is a reflection a,b = 1/2, 7/8 for the inverse slant transform */
499#define IVI_SLANT_PART4(s1, s2, o1, o2, t) \
500 t = (s2) + (((s1)*4 - (s2) + 4) >> 3);\
501 o2 = (s1) + ((-(s1) - (s2)*4 + 4) >> 3);\
502 o1 = (t);\
503
504/** inverse slant8 transform */
505#define IVI_INV_SLANT8(s1, s4, s8, s5, s2, s6, s3, s7,\
506 d1, d2, d3, d4, d5, d6, d7, d8,\
507 t0, t1, t2, t3, t4, t5, t6, t7, t8) {\
508 IVI_SLANT_PART4(s4, s5, t4, t5, t0);\
509\
510 IVI_SLANT_BFLY(s1, t5, t1, t5, t0); IVI_SLANT_BFLY(s2, s6, t2, t6, t0);\
511 IVI_SLANT_BFLY(s7, s3, t7, t3, t0); IVI_SLANT_BFLY(t4, s8, t4, t8, t0);\
512\
513 IVI_SLANT_BFLY(t1, t2, t1, t2, t0); IVI_IREFLECT (t4, t3, t4, t3, t0);\
514 IVI_SLANT_BFLY(t5, t6, t5, t6, t0); IVI_IREFLECT (t8, t7, t8, t7, t0);\
515 IVI_SLANT_BFLY(t1, t4, t1, t4, t0); IVI_SLANT_BFLY(t2, t3, t2, t3, t0);\
516 IVI_SLANT_BFLY(t5, t8, t5, t8, t0); IVI_SLANT_BFLY(t6, t7, t6, t7, t0);\
517 d1 = COMPENSATE(t1);\
518 d2 = COMPENSATE(t2);\
519 d3 = COMPENSATE(t3);\
520 d4 = COMPENSATE(t4);\
521 d5 = COMPENSATE(t5);\
522 d6 = COMPENSATE(t6);\
523 d7 = COMPENSATE(t7);\
524 d8 = COMPENSATE(t8);}
525
526/** inverse slant4 transform */
527#define IVI_INV_SLANT4(s1, s4, s2, s3, d1, d2, d3, d4, t0, t1, t2, t3, t4) {\
528 IVI_SLANT_BFLY(s1, s2, t1, t2, t0); IVI_IREFLECT (s4, s3, t4, t3, t0);\
529\
530 IVI_SLANT_BFLY(t1, t4, t1, t4, t0); IVI_SLANT_BFLY(t2, t3, t2, t3, t0);\
531 d1 = COMPENSATE(t1);\
532 d2 = COMPENSATE(t2);\
533 d3 = COMPENSATE(t3);\
534 d4 = COMPENSATE(t4);}
535
536void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
537{
538 int i;
539 const int32_t *src;
540 int32_t *dst;
541 int tmp[64];
542 int t0, t1, t2, t3, t4, t5, t6, t7, t8;
543
544#define COMPENSATE(x) (x)
545 src = in;
546 dst = tmp;
547 for (i = 0; i < 8; i++) {
548 if (flags[i]) {
549 IVI_INV_SLANT8(src[0], src[8], src[16], src[24], src[32], src[40], src[48], src[56],
550 dst[0], dst[8], dst[16], dst[24], dst[32], dst[40], dst[48], dst[56],
551 t0, t1, t2, t3, t4, t5, t6, t7, t8);
552 } else
553 dst[0] = dst[8] = dst[16] = dst[24] = dst[32] = dst[40] = dst[48] = dst[56] = 0;
554
555 src++;
556 dst++;
557 }
558#undef COMPENSATE
559
560#define COMPENSATE(x) (((x) + 1)>>1)
561 src = tmp;
562 for (i = 0; i < 8; i++) {
563 if (!src[0] && !src[1] && !src[2] && !src[3] && !src[4] && !src[5] && !src[6] && !src[7]) {
564 memset(out, 0, 8*sizeof(out[0]));
565 } else {
566 IVI_INV_SLANT8(src[0], src[1], src[2], src[3], src[4], src[5], src[6], src[7],
567 out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7],
568 t0, t1, t2, t3, t4, t5, t6, t7, t8);
569 }
570 src += 8;
571 out += pitch;
572 }
573#undef COMPENSATE
574}
575
576void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
577{
578 int i;
579 const int32_t *src;
580 int32_t *dst;
581 int tmp[16];
582 int t0, t1, t2, t3, t4;
583
584#define COMPENSATE(x) (x)
585 src = in;
586 dst = tmp;
587 for (i = 0; i < 4; i++) {
588 if (flags[i]) {
589 IVI_INV_SLANT4(src[0], src[4], src[8], src[12],
590 dst[0], dst[4], dst[8], dst[12],
591 t0, t1, t2, t3, t4);
592 } else
593 dst[0] = dst[4] = dst[8] = dst[12] = 0;
594
595 src++;
596 dst++;
597 }
598#undef COMPENSATE
599
600#define COMPENSATE(x) (((x) + 1)>>1)
601 src = tmp;
602 for (i = 0; i < 4; i++) {
603 if (!src[0] && !src[1] && !src[2] && !src[3]) {
604 out[0] = out[1] = out[2] = out[3] = 0;
605 } else {
606 IVI_INV_SLANT4(src[0], src[1], src[2], src[3],
607 out[0], out[1], out[2], out[3],
608 t0, t1, t2, t3, t4);
609 }
610 src += 4;
611 out += pitch;
612 }
613#undef COMPENSATE
614}
615
616void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
617{
618 int x, y;
619 int16_t dc_coeff;
620
621 dc_coeff = (*in + 1) >> 1;
622
623 for (y = 0; y < blk_size; out += pitch, y++) {
624 for (x = 0; x < blk_size; x++)
625 out[x] = dc_coeff;
626 }
627}
628
629void ff_ivi_row_slant8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
630{
631 int i;
632 int t0, t1, t2, t3, t4, t5, t6, t7, t8;
633
634#define COMPENSATE(x) (((x) + 1)>>1)
635 for (i = 0; i < 8; i++) {
636 if (!in[0] && !in[1] && !in[2] && !in[3] && !in[4] && !in[5] && !in[6] && !in[7]) {
637 memset(out, 0, 8*sizeof(out[0]));
638 } else {
639 IVI_INV_SLANT8( in[0], in[1], in[2], in[3], in[4], in[5], in[6], in[7],
640 out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7],
641 t0, t1, t2, t3, t4, t5, t6, t7, t8);
642 }
643 in += 8;
644 out += pitch;
645 }
646#undef COMPENSATE
647}
648
649void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
650{
651 int x, y;
652 int16_t dc_coeff;
653
654 dc_coeff = (*in + 1) >> 1;
655
656 for (x = 0; x < blk_size; x++)
657 out[x] = dc_coeff;
658
659 out += pitch;
660
661 for (y = 1; y < blk_size; out += pitch, y++) {
662 for (x = 0; x < blk_size; x++)
663 out[x] = 0;
664 }
665}
666
667void ff_ivi_col_slant8(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
668{
669 int i, row2, row4, row8;
670 int t0, t1, t2, t3, t4, t5, t6, t7, t8;
671
672 row2 = pitch << 1;
673 row4 = pitch << 2;
674 row8 = pitch << 3;
675
676#define COMPENSATE(x) (((x) + 1)>>1)
677 for (i = 0; i < 8; i++) {
678 if (flags[i]) {
679 IVI_INV_SLANT8(in[0], in[8], in[16], in[24], in[32], in[40], in[48], in[56],
680 out[0], out[pitch], out[row2], out[row2 + pitch], out[row4],
681 out[row4 + pitch], out[row4 + row2], out[row8 - pitch],
682 t0, t1, t2, t3, t4, t5, t6, t7, t8);
683 } else {
684 out[0] = out[pitch] = out[row2] = out[row2 + pitch] = out[row4] =
685 out[row4 + pitch] = out[row4 + row2] = out[row8 - pitch] = 0;
686 }
687
688 in++;
689 out++;
690 }
691#undef COMPENSATE
692}
693
694void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
695{
696 int x, y;
697 int16_t dc_coeff;
698
699 dc_coeff = (*in + 1) >> 1;
700
701 for (y = 0; y < blk_size; out += pitch, y++) {
702 out[0] = dc_coeff;
703 for (x = 1; x < blk_size; x++)
704 out[x] = 0;
705 }
706}
707
708void ff_ivi_row_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
709{
710 int i;
711 int t0, t1, t2, t3, t4;
712
713#define COMPENSATE(x) (((x) + 1)>>1)
714 for (i = 0; i < 4; i++) {
715 if (!in[0] && !in[1] && !in[2] && !in[3]) {
716 memset(out, 0, 4*sizeof(out[0]));
717 } else {
718 IVI_INV_SLANT4( in[0], in[1], in[2], in[3],
719 out[0], out[1], out[2], out[3],
720 t0, t1, t2, t3, t4);
721 }
722 in += 4;
723 out += pitch;
724 }
725#undef COMPENSATE
726}
727
728void ff_ivi_col_slant4(const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
729{
730 int i, row2;
731 int t0, t1, t2, t3, t4;
732
733 row2 = pitch << 1;
734
735#define COMPENSATE(x) (((x) + 1)>>1)
736 for (i = 0; i < 4; i++) {
737 if (flags[i]) {
738 IVI_INV_SLANT4(in[0], in[4], in[8], in[12],
739 out[0], out[pitch], out[row2], out[row2 + pitch],
740 t0, t1, t2, t3, t4);
741 } else {
742 out[0] = out[pitch] = out[row2] = out[row2 + pitch] = 0;
743 }
744
745 in++;
746 out++;
747 }
748#undef COMPENSATE
749}
750
751void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
752 const uint8_t *flags)
753{
754 int x, y;
755
756 for (y = 0; y < 8; out += pitch, in += 8, y++)
757 for (x = 0; x < 8; x++)
758 out[x] = in[x];
759}
760
761void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, uint32_t pitch,
762 int blk_size)
763{
764 int y;
765
766 out[0] = in[0];
767 memset(out + 1, 0, 7*sizeof(out[0]));
768 out += pitch;
769
770 for (y = 1; y < 8; out += pitch, y++)
771 memset(out, 0, 8*sizeof(out[0]));
772}
773
774#define IVI_MC_TEMPLATE(size, suffix, OP) \
775static void ivi_mc_ ## size ##x## size ## suffix(int16_t *buf, \
776 uint32_t dpitch, \
777 const int16_t *ref_buf, \
778 uint32_t pitch, int mc_type) \
779{ \
780 int i, j; \
781 const int16_t *wptr; \
782\
783 switch (mc_type) { \
784 case 0: /* fullpel (no interpolation) */ \
785 for (i = 0; i < size; i++, buf += dpitch, ref_buf += pitch) { \
786 for (j = 0; j < size; j++) {\
787 OP(buf[j], ref_buf[j]); \
788 } \
789 } \
790 break; \
791 case 1: /* horizontal halfpel interpolation */ \
792 for (i = 0; i < size; i++, buf += dpitch, ref_buf += pitch) \
793 for (j = 0; j < size; j++) \
794 OP(buf[j], (ref_buf[j] + ref_buf[j+1]) >> 1); \
795 break; \
796 case 2: /* vertical halfpel interpolation */ \
797 wptr = ref_buf + pitch; \
798 for (i = 0; i < size; i++, buf += dpitch, wptr += pitch, ref_buf += pitch) \
799 for (j = 0; j < size; j++) \
800 OP(buf[j], (ref_buf[j] + wptr[j]) >> 1); \
801 break; \
802 case 3: /* vertical and horizontal halfpel interpolation */ \
803 wptr = ref_buf + pitch; \
804 for (i = 0; i < size; i++, buf += dpitch, wptr += pitch, ref_buf += pitch) \
805 for (j = 0; j < size; j++) \
806 OP(buf[j], (ref_buf[j] + ref_buf[j+1] + wptr[j] + wptr[j+1]) >> 2); \
807 break; \
808 } \
809} \
810\
811void ff_ivi_mc_ ## size ##x## size ## suffix(int16_t *buf, const int16_t *ref_buf, \
812 uint32_t pitch, int mc_type) \
813{ \
814 ivi_mc_ ## size ##x## size ## suffix(buf, pitch, ref_buf, pitch, mc_type); \
815} \
816
817#define IVI_MC_AVG_TEMPLATE(size, suffix, OP) \
818void ff_ivi_mc_avg_ ## size ##x## size ## suffix(int16_t *buf, \
819 const int16_t *ref_buf, \
820 const int16_t *ref_buf2, \
821 uint32_t pitch, \
822 int mc_type, int mc_type2) \
823{ \
824 int16_t tmp[size * size]; \
825 int i, j; \
826\
827 ivi_mc_ ## size ##x## size ## _no_delta(tmp, size, ref_buf, pitch, mc_type); \
828 ivi_mc_ ## size ##x## size ## _delta(tmp, size, ref_buf2, pitch, mc_type2); \
829 for (i = 0; i < size; i++, buf += pitch) { \
830 for (j = 0; j < size; j++) {\
831 OP(buf[j], tmp[i * size + j] >> 1); \
832 } \
833 } \
834} \
835
836#define OP_PUT(a, b) (a) = (b)
837#define OP_ADD(a, b) (a) += (b)
838
839IVI_MC_TEMPLATE(8, _no_delta, OP_PUT)
840IVI_MC_TEMPLATE(8, _delta, OP_ADD)
841IVI_MC_TEMPLATE(4, _no_delta, OP_PUT)
842IVI_MC_TEMPLATE(4, _delta, OP_ADD)
843IVI_MC_AVG_TEMPLATE(8, _no_delta, OP_PUT)
844IVI_MC_AVG_TEMPLATE(8, _delta, OP_ADD)
845IVI_MC_AVG_TEMPLATE(4, _no_delta, OP_PUT)
846IVI_MC_AVG_TEMPLATE(4, _delta, OP_ADD)
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